Window lock



N. KERMAN WINDOW LOCK March 26, 1963 2 Sheets-Sheet 1 Filed Oct. 2, 1961 FIGZ INVENTOR.

NATHAN KERMAN ATTOR N E V N. KERMAN WINDOW LOCK March 26, 1963 2 Sheets-Sheet 2 Filed Oct. 2, 1961 FIG.5

FIG-.3

INVENTOR. NATHAN KERMAN ATTORNEY may be conventional. 16 is a locking or securing device, generally designated $382,617 Patented Mar. 26, 1963 3,082,617 WINDOW LOCK Nathan Ker-man, 969 43rd St., Brooklyn, N.Y. Filed Oct. 2, 1961, Ser. No. 142,368 8 Claims. (Cl. 70-90) This invention relates generally to locking devices, and is especially concerned with a device for locking or securing relatively slidable panels or frames, such as the sashes of a double-hung window, or the like.

It is one object of the present invention to provide a securing device of the type described which is relatively simple and inexpensive to manufacture and install, highly effective and entirely reliable throughout a long useful life, and which can be operated to lock and unlock window sash or the like with extreme case and facility.

It is a further object of the present invention to provide a locking or securing device having the advantageous characteristics mentioned in the preceding paragraph which is of extremely simple construction to prolong useful life, and which can be economically manufactured for sale at a reasonable price.

Other objects of the present invention will become apparent upon reading the following specification and referring to the accompanying drawings, which form a material part of this disclosure.

The invention accordingly consists in the features of construction, combinations of elements, and arrangements of parts, which will be exemplified in the construction hereinafter described, and of which the scope will be indicated by the appended claims.

In the drawings:

FIG. 1 is a sectional elevational view showing a win- (low-securing device of the present invention operatively associated with the sash of a double-hung window, and 3 illustrated in the locked condition.

FIG. 2 is a sectional elevational view similar to FIG. 1, but illustrating the unlocked condition.

FIG. 3 is an elevational view taken substantially along the line 3-3 of FIG. 1.

FIG. 4 is a perspective view illustrating a key-lock adapted for use in the instant securing device.

FIG. 5 is a perspective view showing a component of the lock of FIG. 4.

FIG. 6 is a perspective view showing the lock of the present invention with the closure plate of FIG. 5 removed.

FIG. 7 is a perspective view showing an annular spacer of the key-lock of FIG. 4, but removed therefrom. FIG. 8 is an exploded perspective view showing a locking plunger or bolt of the present invention, diagrammatically illustrating a resilient biasing element associated therewith, and showing a receptacle or receiver for the bolt in its projected or locking condition.

Referring now more particularly to the drawings, and

specifically to FIGS. 1-3 thereof, there is shown a doublehung window including relatively slidable, overlapping sash, namely an outer sash 15, and an inner sash 16, which Associated with the sash 15 and 17, constructed in accordance with the teachings of the present invention.

The securing device 17 includes a housing "18 of generally right-angular configuration to define a pair of hollow legs 19 and 20. The housing 18 is arranged with its leg 19 extending generally vertically along the vertical inner surface 21 of the inner sash '16, while the leg 20 extends generally horizontally outward from the upper end of the leg 19 along the upper edge 22 of the inner sash outward toward the outer sash 15.

In particular, the generally vertical leg 19 includes a generally vertical outer wall 23' secured in facing engagement with the inner surface of inner sash 16, as by a fastener 24, and a lower wall 25 extending inwardly from the lower end of the outer wall 23. A pair of walls 26 extend generally vertically in parallel spaced, facing relation upward from respective sides of the bottom wall 25 and along the outer wall 23. The housing leg 19 opens inwardly, having no inner wall, for purposes appearing presently.

The generally horizontal housing leg 29 includes a generally horizontal bottom wall 35} extending outward from the upper end of outer wall 23 along the upper surface 22 of sash 16 and terminates proximate to sash 15. An outer wall 31 upstands from the outer end of bottom wall 30 facing toward and slightly spaced from the inner surface 32 of sash .15 and is provided with a central through opening or hole 33. A pair of generally vertically disposed side walls 34 extend inward from opposite sides of the outer Wall 31 along respective sides of the lower wall 30 and merge with respective side walls 26 of the vertical leg 19. Extending generally horizontally inward from the upper edge of outer wall 31, between the side walls 34 is an upper wall 35. The upper wall 35 is spaced in parallel relation over the lower wall 30 of the horizontal leg 20, and over the lower wall 25 of the vertical leg 19.

In a closed position of sash '15 and 16, or in other desired sash positions, there may be provided in the outer sash 15 one or more receivers or cups 37 securely recessed .in the outer sash and facing inwardly therefrom through the inner surface 32 toward the hole 33, for a purpose appearing presently. V

A generally rectangular mounting plate 39 is disposed generally vertically within the vertical housing leg 19, and secured therein in facing engagement with the outer wall 23 by any suitable means, such as a fastener 40' extending through the outer wall 23 into the sash 16, and a fastener 41 extending through the mounting plate and in threaded engagement in the outer wall. The mounting plate 39 is thus oonfoumably received in the housing leg .19 spaced from the open inner side thereof, and has its upper end region extending upward beyond the bottom wall 30 of horizontal housing leg 20 substantially into engagement with the underside of upper wall 35. The mounting plate 39 may, therefore, be said to extend vertically across the interior of horizontal leg 20. The upper region 42 of mounting plate 39 extending across the horizontal leg 20 is formed with a through aperture, opening or hole 43 in generally horizontal alignment with the hole 33 of vertical outer wall 31.

A generally rectangular lug or boss 45 projects from the mounting plate 39 generally horizontally away from the outer wall 23 for mounting a cover or plate 46 across the open inner side of the housing 18. That is, the cover or plate 46 is of generally rectangular configuration for conforming engagement within the walls 25, 26 and 35, being substantially flush with the inner edges of said walls when in abutting engagement with the boss 4-5. A fastener 47 is removably engaged through the cover plate 46 and into the boss 45- to fix the cover plate in position. Formed in an upper region of the cover plate is a through opening or hole 48 in substantial alignment with the holes 33 and 43-, while an additional tlu'ough opening or hole 50 may be formed in the cover plate at a location spaced between the hole 48 and boss 45.

A rodlike plunger or bolt 52 is arranged longitudinally of and within the horizontal housing leg 20, and extends slidably through the aligned openings or holes 33 and 43 so as to be mounted therein for axial sliding movement between the locking position of FIG. 1 projected outward for engagement in the receiver 37 and the unlocking or releasing position of FIG. 2 retracted inward out of the receiver. The bolt or plunger 52 may be provided inward of the mounting plate 39 with a circumferential groove or neck 53 defining on the plunger an inwardly facing annular shoulder or abutment 54-. Inward of the neck 53 the plunger 52 may be provided with an axial extension or head 55 projecting inward through and beyond the opening 48 of the cover plate 46. A cross pin or stop 56 may be engaged through the plunger or bolt 52 out-ward of the mounting plate 39; and a coil compression spring 57 may be circumposed about the plunger between and in engagement with the pin 56 and outer wall 31 to define resilient means biasing the plunger inward toward its limiting retracted position of FIG. 2 with the pin 56 abutting the upper end region 42 of mounting plate 39. When the plunger 52 is located in alignment with a receiver or cup 37, the inner end plunger extension 55 may be manually pressed to compress spring 57 and project the plunger into the receiver.

Mounted in the vertical housing leg 19, beneath the path of plunger 52, is a key-lock assembly, generally designated 69. The key-lock assembly 60 includes a generally flat, slideway construction 61 disposed generally vertically against the mounting plate 39, and coniormably received between the side walls 26 while resting on the lug 45. Projecting generally horizontally inward from the slideway construction 61 is a generally cylindrical barrel 62 which passes concentrically through and inward beyond the opening 50 of cover plate 46. An annular collar or spacer 63 is circumposed about the barrel 62 and engageable with the slideway construction 61 and cover plate 46 to positively locate the key-lock assembly 60 in the inward and outward direction. Further, as the slideway construction 61 is conformably engaged between the side walls 26 with its lower end engageable with the boss 45, and as the barrel 62 is engaged through the cover-plate opening 50, it is seen that the key-lock assembly 60 is positively held against appreciable movement in any direction.

The slideway construction 61 is best seen in FIGS. 4, 5, and 6, as including a pair of generally parallel spaced, vertically extending sidepieces 65 fixedly secured to the barrel 62 at the outer end thereof, and a crosspiece 66 preferably integral with and extending laterally between the lower ends of the sidepieces 65. The sidepieces 65 thus combine with the crosspiece or endpiece 66 to define therebetween an upwardly opening slideway 67. The endpiece 66 may be formed integrally with the sidepieces 65 and engageable with the boss or lug 45 of the mounting plate 39 to positively limit downward movement of the slideway construction.

On the upper side of the endpiece 66, within the slideway or opening 67, there may be carried a stop 68, while the sidepicces 65 may each be provided with outstanding lug 69.

Slidably received in the slideway 67 between the sidepieces 65 is a generally vertically disposed slide plate or latch 70. The lower end of the latch 70 is of reduced width to define a downwardly projecting tongue 71 spaced inward from the sidepieces 65. Within the slideway 67, on opposite sides of the tongue 71 there may be provided a pair of coil compression springs 72, or other suitable resilient means, each engageable between the lower endpiece '66 and the latch 70 to bias the latter upward.

Axially rotatable "within the cylinder 62 is a key-lock plug 75 having a key-receiving slot 76 on its inner end. On the opposite or outer end of the rotatable plug 75 there is provided a boss or pin 77 engageable through a slot 78 formed in the latch or plate 70*. The slot 78 is configured such that the pin-in-slot connection between the latch '70 and rotatable plug 75 efiects vertical downward movement of the latch upon plug rotation in one direction, and releases the latoh for upward movement under the force of springs 71 upon plug rotation in the other direction.

In order to secure the slideway construction together, and constrain the latch 70 to its vertical movement, a clo- 4 sure plate 80, see FIG. 5, is engaged over the outer side of the slideway 67, hearing against the sidep-ieces 65, and formed with cutouts or openings 81 for respective reception of lugs 69. Thus, the lugs 69 may be upset or peened to fixedly secure the closure plate in position.

In the locked condition of FIG. 1, it will be noted that the upper end of latch 70 has moved vertically into the horizontal path of movement of plunger 52, being engaged in the reduced neck 53 and bearing against the plunger shoulder 54 to retain the plunger in its projected or locking position. In order to release or unlock the securing device 17, it is only necessary to insert the key 83, see FIG. 2, in the key-lock plug 75 and rotate the latter to Withdraw the latch 70 downward by the pin-in-slot connection 77, 78 against the force of spring 72. The slot 78 is suitably configured for retention of the latch 70 in its downwardly drawn, unlocked condition. The plunger 52 is then free to move inward under the force of compression spring 57,

retract-ing from the receiver 37, to the position of FIG. 2.

The sa-sh 16 may then be raised vertically, in the direction of arrow 84, to open the window. Upon turning and removal of the key 83, the latch 70 i released for upward movement under the force of springs 72; and, with the plunger 52 positioned in alignment with a receiver 37, the plunger extension 55 may be manually actuated to shift the plunger into the receiver and permit movement of the latch 70 into the path of plunger movement for locking engagement in the neck 53, for return to the condition of FIG. 1.

From the foregoing, it is seen that the present invention provides a securing device for the sash of doublehung windows and the like, which fully accomplishes its intended objects and is well adapted to meet practical conditions of manufacture, installation and use.

Although the present invention has :been described in some detail by Way of illustration and example, for purposes of clarity of understanding, it is understood that certain changes and modifications may be made within the spirit of the invention and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

l. A securing device for a double-hung Window having inner and outer sashes, said device comprising a housing of angulate configuration defining a pair of legs and adapted to be fixed to the inner sash with one leg along the inner face of the inner sash and the other leg beyond the inner sash extending toward the outer sash, said housing having its inner side open, a mounting plate fixed in said one housing leg and extending across said other housing leg, a plunger in said other housing leg and extending slidably through said mounting plate for looking projection into and unlocking retraction from said outer sash, a slideway in said one housing leg adjacent to said mounting plate, a key-look barrel projecting from said slideway through the open inner side of said housing, a rotary key-lock plug in said barrel, a latch slidable in said slideway and movable into and out of the path of movement of said plunger when the latter is projected to positively and releasably retain said plunger projected, operating means connecting said plug and latch to slide the latter upon rotation of said plug, a cover removably fixed over the inner side of said housing and receiving said barrel, and an actuating extension on said plunger extending through and beyond said cover for manual projection of said plunger.

2. A securing device according to claim 1, said slideway being conformably received in said housing spaced from said cover, and a spacer about said barrel and interposed between said slideway and cover to positively locate said slideway.

3. A securing device according to claim 1, in combination with plunger spring means connected to said plunger to urge the latter toward its retracted position, and latch spring means connected to said latch to urge the latter toward the path of plunger movement upon plug rotation in one direction, whereby manual projection of said plunger permits movement of said latch into the path of plunger movement to positively lock the plunger when said plug is turned in said one direction.

4. A securing device according to claim 1, said slideway comprising a pair of parallel spaced sidepieces fixed to one end of said barrel and extending longitudinally of said one housing leg, an endpiece extending between the eds of said sidepieces remote from said other leg, said latch being slidable between said sidepieces and outward beyond the other ends of said sidepieces, and a closure plate bridging the space between and secured to said sidepieces.

5. A securing device according to claim 1, said mounting plate extending entirely along said one housing leg between the lower and upper ends of said housing, an inwardly projecting boss on said mounting plate, and fastener means detachably securing said cover plate to said boss.

6. A securing device for a double-hung Window having inner and outer sashes, said device comprising a housing of angulate configuration defining a pair of legs and adapted to be fixed to the inner sash with one leg extending vertically along the inner face of the inner sash and the other leg extending horizontally from the upper end of the vertical leg outward toward the outer sash, said housing having its inner side open, a mounting plate in said vertical leg secured in facing engagement with the outer wall thereof and extending vertically across said horizontal leg, a plunger arranged longitudinally within said horizontal leg and extending slidably through said mounting plate for locking projection into and unlocking retraction from said outer sash, an actuating extension on the inner end of said plunger extending inward through and beyond the open inner side of said housing, a keylock conformably engaged in said vertical housing leg against said mounting plate, a latch carried by said keylock for movement into and out of the path of plunger movement, spring means resiliently urging said latch into said path, operating means connecting said latch to said key-lock for selected movement of said latch out of said path and release of said latch for movement into said path, and a cover plate removably fixed over the inner side of said housing and receiving said key-lock and plunger.

7. A securing device according to claim 6, in combination with an inwardly projecting boss on said mounting plate, and fastener means detachably securing said cover plate to said boss.

8. A securing device according to claim 6, in combination with resilient means in said horizontal housing leg connected to said plunger and urging the latter toward its retracted position, for automatic retraction and unlocking of said plunger upon movement of said latch out of the path of plunger movement.

References Cited in the file of this patent UNITED STATES PATENTS 186,137 Keating et a1 Jan. 9, 1877 532,935 Woolery Jan. 22, 1895 559,982 Madison May 12, 1896 914,065 Newhart Mar. 2, 1909 1,329,977 Krafka Feb. 3, 1920 FOREIGN PATENTS 270,621 Great Britain May 12, 1927 

1. A SECURING DEVICE FOR A DOUBLE-HUNG WINDOW HAVING INNER AND OUTER SASHES, SAID DEVICE COMPRISING A HOUSING OF ANGULATE CONFIGURATION DEFINING A PAIR OF LEGS AND ADAPTED TO BE FIXED TO THE INNER SASH WITH ONE LEG ALONG THE INNER FACE OF THE INNER SASH AND THE OTHER LEG BEYOND THE INNER SASH EXTENDING TOWARD THE OUTER SASH, SAID HOUSING HAVING ITS INNER SIDE OPEN, A MOUNTING PLATE FIXED IN SAID ONE HOUSING LEG AND EXTENDING ACROSS SAID OTHER HOUSING LEG, A PLUNGER IN SAID OTHER HOUSING LEG AND EXTENDING SLIDABLY THROUGH SAID MOUNTING PLATE FOR LOCKING PROJECTION INTO AND UNLOCKING RETRACTION FROM SAID OUTER SASH, A SLIDEWAY IN SAID ONE HOUSING LEG ADJACENT TO SAID MOUNTING PLATE, A KEY-LOCK BARREL PROJECTING FROM SAID SLIDEWAY THROUGH THE OPEN INNER SIDE OF SAID HOUSING, A ROTARY KEY-LOCK PLUG IN SAID BARREL, A LATCH SLIDABLE IN SAID SLIDEWAY AND MOVABLE INTO AND OUT OF THE PATH OF MOVEMENT OF SAID PLUNGER WHEN THE LATTER IS PROJECTED TO 